TurlaMosquito_Mal_3

rule TurlaMosquito_Mal_3 {
   meta:
      description = "Detects malware sample from Turla Mosquito report"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.welivesecurity.com/wp-content/uploads/2018/01/ESET_Turla_Mosquito.pdf"
      date = "2018-02-22"
      hash1 = "443cd03b37fca8a5df1bbaa6320649b441ca50d1c1fcc4f5a7b94b95040c73d1"
      id = "c83e0a93-3f8d-572d-ac1a-92fef0b3d3f6"
   strings:
      $x1 = "InstructionerDLL.dll" fullword ascii

      $s1 = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36" fullword wide
      $s2 = "/scripts/m/query.php?id=" fullword wide
      $s3 = "SELECT * FROM AntiVirusProduct" fullword ascii
      $s4 = "Microsoft Update" fullword wide
   condition:
      uint16(0) == 0x5a4d and filesize < 400KB and (
         pe.imphash() == "88488fe0b8bcd6e379dea6433bb5d7d8" or
         ( pe.exports("InstallRoutineW") and pe.exports("StartRoutine") ) or
         $x1 or
         3 of them
      )
}